Cymbalta (duloxetine) is an antidepressant that was approved by the FDA for use in August, 2004. It has been shown to be effective for the treatment of major depression. In four studies reported by the FDA, Cymbalta was compared to a placebo. In all the studies, individuals taking Cymbalta measured higher levels of improvement of depressive symptoms. The FDA also reported the results of a randomized study of Cymbalta's efficacy in treating pain from diabetic neuropathy were reported. It was significantly more likely to cause lessening of pain as compared to a placebo. Though these studies show it can be beneficial, Cymbalta is a potent drug, and as such, comes with side effects.


Cymbalta is a selective serotonin and norepinephren reuptake inhibitor (SSNRI). It is administered as an oral capsule. The capsules contain enteric coated pellets of duloxetine hydrochloride (Cymbalta). The capsules come in doses of 20, 30, or 60mg.


When choosing an antidepressant it is important to be aware that there are side effects. Cymbalta's side effects that are most common are nausea, dry mouth and drowsiness. Some other effects reported were dizziness, fatigue, excessive sweating and hot flashes. Any side effect should be discussed with your doctor.

Blurred Vision

There are a couple of ways that Cymbalta may affect the vision specifically. The first one is that it may cause sight to become blurred. One out of every 10 to 12 people have blurred vision as a side effect. For some, this is temporary, for others it continues. Report this to your doctor. She will probably ask you to monitor it for a while and if it does not decrease, she may switch medications.

Narrow-Angle Glaucoma

The second area that vision is affected is with individuals who suffer from narrow-angle glaucoma. Patients with this condition should not take Cymbalta. This medication has shown to increase the risk for these people of a condition called mydriasis. This means that the eye has prolonged and abnormal dilation.


Cymbalta may be a medication that works wonders for you. It may allow you to function and live a productive life. It is important that you advocate for yourself when taking it, however, by documenting side effects, asking questions and maintaining contact with your provider.